2.15.0
This release fixes some errors and supports Factur-X/ZUGFeRD 2.3.2 (#531)
It uses its UBL compatible InvoiceImporter as basis for the ZUGFeRDimporter convenience methods (#435). It additionally fixes a PDF/A validation issue #538, converts UBL and CII to validated PDF/A #523, now also supports validation warnings #532 and also validates UBL credit notes #555.